Seasonic X Series 560 or 660 Watt

[Sevada]

for this setup?

1 Western Digital Caviar Green, 2TB
1 Corsair Obsidian 650D (3 fans)
1 Scythe Mugen 2 Rev. B
1 Intel Core i7 2600K
1 Crucial m4 128GB
2 Corsair Vengeance 8GB LP
1 MSI N560GTX-Ti Hawk
1 Asus P8P67 (B3)

I will be using it for web browsing, office etc. but also for gaming, watching movies and of video and photo editing.

The CPU will be overclocked in the near future to 4GHz. GPU will remain at stock.

I was thinking of getting a Seasonic X Series 560Watt 80+ Gold. Would that be enough or should I just in case go for Seasonic X Series 660Watt 80+ Gold?

[dandelioneater]

If you don't plan on adding a second video card later on then the 560W would be power enough for your system. Yet you might pickup the 660 for some added headroom if it isn't much more expensive.

[Sevada]

Nope, just planning on sticking with one nVidia card, hence why I want the P8P67.

[ilya]

Both will be more than enough, but if the price difference is less than ~$25 I would get the X660. It's a slightly more updated version of the X560 platform. (which in turn is a slightly updated version of the X750 platform)